Question

Prove that

−

−

= 1 + ​

Answer 1

Answer:

Here is your answer :-

Step-by-step explanation:

We use only the usual field axioms for the real numbers. First we prove an intermediate result.

0×0

=0×(0+0)

=0×0+0×0

Subtract 0×0 from each side to get 0=0×0. Now we are ready for the final kill.

0

=0×0

=(1−1)×(1−1)

=1×1+1×(−1)+(−1)×1+(−1)×(−1)

=1+(−1)+(−1)+(−1)×(−1)

=(−1)+(−1)×(−1)

Add 1 to each side to get 1=(−1)×(−1).

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